Tony Harrison reached the pinnacle of his career when he upset then-undefeated Jermell Charlo by unanimous decision to become the WBC 154-pound champion in 2018.

Now, as Harrison is seeking an opponent who’ll bring the spark that Charlo gave his career and elevate his game to another level. First, though, Harrison needs to get past Brian Damian Chaves when he faces him in a 10-round middleweight bout on Dec. 20 at Fox Theatre in Detroit on a Salita Promotions card on DAZN.

“I’m looking for a Charlo kind of fight,“ Harrison told The Ring. “Not only did it bring the best out of me, but it made me rise to the occasion. I'm looking for another fight to make me rise to the occasion. Show up, talk my [stuff], and that's good for boxing. ... I want to fight another legend. I want to fight an [Erislandy] Lara [or] an Errol Spence, if he were to come back up. I just want a big name.”

Harrison and Charlo fought twice, with the rematch in 2019 being a tightly contested affair. He dropped Harrison three times, including twice in the 11th round, before stopping the Detroit native to reclaim the WBC junior middleweight title.

Harrison (30-4-1, 21 KOs) will be in the second fight of his comeback after more than two years off. In his return to the ring and first fight in Detroit since 2014, he overcame a late knockdown to win a wide unanimous decision over Edward Ulloa Diaz on July 26.

The bout vs. Chaves (15-7, 6 KOs) will represent the first time Harrison has fought multiple times in a year since 2018. With the uptick in activity, he believes he can be the best version of himself.

“I don't need to be sitting on the couch,” Harrison said. “I don't need to be playing the [waiting] game for a year and a half, and then you call me and say, ‘Hey, I got a fight for you.’ Just keep me off the couch. Keep me off the game. Keep me in the gym. I'm already in the gym anyway. I think any fighter will want their career to go that way.”

If Harrison, 35, is going to get the big fight he’s seeking, though, he knows that he can’t just win. He has dispatch Chaves impressively. If he can’t, tough questions could be on the horizon for the former champion.

“If I'm lying, I'm flying,” Harrison said. “If I don't do him dirty, I might hang ‘em up. I'm supposed to do him dirty. My first fight was getting acclimated to the way I'm somewhat acclimated. The sparring I'm getting is phenomenal. They’re kicking my ass more than anything. I feel like it's no excuse not to go in there and stop this guy.”

He added: “If I don't go in and squash them like a bug, I feel like I didn't do my job, and then I've got to re-evaluate some stuff. I'm going in to give Detroit an early Christmas gift with a knockout. That's my plan.”